Motor



Jan. 21, 1930. c. A. sPo'rz 1,744,343

MOTOR Filed May 1. 1928 4 Sheets-Sheet l 1' V Q '3' Inuenion' Jan. 21, 1930. c. A. SPOTZ 1,744,343

MOTOR Filed May I. 192;! 4 Sheets-Sheet 2 N Inuehibr: CVleJLZ'er A.Spp,i'z,

Jan. 21, 1930.

c. A. SPOTZ 1,744,343

MOTOR Filed May 1. 1928 4 Sheets-Sheet 3 I I I Jan. 21', 1930. c. A. SPOT: 4 1,744,343

MOTOR Filed May 1. 1928 4 Sheets-Sheet 4 64 F g 5. Z A 50 2o 9 i Inuenior. 2 5% Ch egl'e z- A. ,Spqiz Patented Jan. 21, 1930 GEESTER A. SPOTZ, OF GBEENWIGH, CONNECTICUT MOTOR Application filed May 1, 1928. Serial No. 274,246.

This invention relates'to improvements in external combustion engines.

An object of this invention is the provision of a slow speed motor using gasoline as the fuel which is designed to tend to the increase of efficiency in external combustion engines.

A further object of the invention is the utilization ofthe exploded gases to generate and combine with steam, and to, utilize the combined exhaust gas and steam to operate an engine in an efficientand novel manner, as hereinafter set forth.

These and other objects I attain by the construction shown in the accompanying drawings, wherein for the purpose of illustration is shown a preferred embodiment of my invention.

The invention consists in the features, combination, and arrangement of parts hereinafter described and particularly pointed out in the claims.

In the drawings:

Fig. 1 is a longitudinal sectional view of my engine.

Fig. 2 is a plan view.

Fig. 3 is a transverse section through the gas compressor cylinders and crank casesubstantially on line 3-3 of Fig. 1.

Fig. 4 is an end view of the engine.

Fig. 5 is a transverse section through the power or steam cylinders, pistons, and crank case, substantially on line 5-5 of Fig. 1.

Fig. 6 is a sectional view of the boiler with the heating coil therein, showing the mounting of the boiler on the engine. The section is taken on line 6-6 of Fig. 2.

Fig. 7 is a section on line 7-7 of Fig. 6.

Referring to the drawings, 1 represents a gas cylinder in which the gas charge is exploded but instead of transmitting this expanded gas and heat to the piston 2 in cylinder 1, it is permitted to go to a reservoir or boiler 3 through a coil 4 immersed in water with the outlet of the coil above the water level 5 in the boiler, where the gases passing out of the coil will mix with steam formed by the heat radiated from the coil. The

. combined steam and exploded gases-are then conducted to the cylinders 6 of a steam or vapor engine 7 to operate the same to crank shaft or drive shaft 8.

Two gas cylinders are provided in the embodiment shown (Fig. 3) but the number of cylinders may be increased if desired without departing from the scope of the invention. The gas compressor pistons 2 and 2' are reciprocated from drive shaft 8 by .means of cam groove 10 on the fly wheel 11, in which are guided roller projections 12 and 12' on the ends of pitmen 13 and 13 connected'to the pistons 2 and 2. The pitmen 13 and 13 are guided in a slot 23 formed in the crank case 24. The cam groove 10 on the fly wheel is so shaped that the compressor pistons 2 and 2 operate alternately and in succession to draw in a gas charge, explode it and'expel it, so that a continuous stream of exploded gas passes from the cylinders 1 and 1 into the coil 4. The shape of the cam groove in the fiy wheel may be modified within the scope of the invention to suit conditions, as where the number of gas cylinders is increased.

The cam groove as shown has a low point a gradually increasing on a curved line on either side thereof to higher points I) and 0 between which are flattened portions d and e gradually increasing on a straight line from points I) and c to highest point 7. The effect of the flattened portions d and e is to slow down the piston movement in approaching or leaving the end of its firing or compression stroke.

The gas charge'is drawn from carbureter' 14 past poppet valve 15 operated from cam 16 on drive shaft 8, in the usual manner, into cylinder 1 where it is compressed and explodedby the piston operating on the twocycle principle and is expelled from the cylinder through passage 17 in the cylinder head, and by valve 18, which is opened by thepressure of the compressed exploded gas, and into manifold 22 into the heating coil 4'which is immersed in water in the preferably horizontally disposed boiler 3 with'its gas discharge end projecting above the sur-. face of the water 5 at 20 into the steam dome.

The cylinder 1' is similarly supplied with gas charge from carbureter 14 through manifold 21 past pop t valve 15 also operated from cam 16 on rive shaft 8. The exploded gas from cylinder 1 passes through a assage similar to 17 and past a valve sim- 1 ar to 18 in the c linder head also into the manifold 22 and t ence'to coil 4.

The gas in passing through the coil heats the same which in turn heats the water to form steam with which the gas mixes in the steam dome of theboiler on its discharge from the coil at 20.

From the boiler the combined steam and gas passes through pipes 25 to the steam cylmder 6 of whic there are four shown in the drawing, arranged in pairs of V-formation and constituting the engine 7. The pipes 25 communicate with the steam dome through outlets 27 in the wall of the boiler. An outlet 28 is provided in the top of the boiler to which is connected a pipe 29 which conducts a, portion of the mixed steam to operate a metal bellows 30 mounted on a bracket 31 on the crank case 24 and so connected with carburetor 14 through links 32 and 33 and valve arm 34 that the valve of the carburetor is open wide at zero pressure, and when the pressure is increased so as to exand the metal bellows, the carbureter valve is correspondingly closed. Thus the pressure in the steam dome of the mixed exploded gas and steam is automatically regulated and controlled b controlling the quantity and strength of t e intake of gas charge by the said pressure.

The steam and gas is admittedto cylinders 6 from pipes 25 through intake ports 26 past poppet valves 26' and operates the pistons 35, the pitmen 36 of each pair of which are pivotally connected to the end of crank 37 at 38, as shown in Fig. 5, so that the shaft 8 is driven. Exhaust ports 39 are provided in the steam cylinders 6 and convey the exhaust steam and gas to the condenser 40 where the exhaust gas passes out by guard 40 through the exhaust ipe 41 at the bottom of the condenser, an the steam is condensed by passing through pipes 42 which are cooled by the fan 43 driven from the shaft 8, by means of sheave 44 and belt 45, as clearly shown in Fig. 1. The water from the condenser asses through pipe 46 to pump 47 driven y gears 48 and 49 from drive shaft 8. The pump 47 pumps the water through pipe 50 past check valve 51 to manifolds 51, from which the-water is conveyed by ipes 51 and 51 to the water jacket 56 of t e steam engine 7 After circulating through the water jackets 56 of the steam engine, the water passes out through pipes 54 of manifold 52 into pipe 52, and thence to manifold 53 and through its pipes 55 to the water jacket56' of the gas compressor 1.

From the water jacket 56' of the gas compressor the water is carried by the force of pump 47 up into and through the annular passages 57 between the pipes 22 of maniold 22 and the surrounding conduits 58, and is permitted to pass back into the boiler through a ertures 59 formed in the inlet 60 to the boiler and surrounding the inlet of coil 4. In this way the boiler is replenished with preheated water of condensation to make up for that going off as steam, thus completing the circulatory system.

Valves or' throttles 61 are provided one in each of the leads 25 from the boiler to the steam cylinders. These valves are operated by link rods 62 and 63 connecting the levers 64 of the valves for each pair of steam cylindcrs and the links 62 and 63 are in turn connected together and operable by a rod 65 to open and close the valves. Rod 65 may be hand or foot operated in any suitable way. These valves are kept closed until the desired operative pressure is obtained in the boiler by operating the gas compressor with an electric starter in the usual and well known manner.

I claim:

1. In combination in a power engine, a gasoline charge compressor, a heating coil, means for discharging the exploded gas immediately upon explosion in the gas compressor into the said heating coil, a boiler, said heating coil being disposed within said boiler and adapted to be immersed in water therein, said coi-l having its outlet above the water line of said boiler so that the gas may mix with the steam in the steam dome of the boiler, a steam engine, means for conveying the mixed gas and steam to the cylinders of the steam engine for operating the same, cam means for driving said gas compressor from said drive shaft, and means controlled by the pressure of steam and gas in the steam dome for regulating the quantity and strength of the gas charge supplied to said gas compressor.

2. In combination in a power engine, a gas compressor, a heating coil, means for discharging the exploded gas immediately upon explosion into the heating coil, a boiler, said heating coil being disposed within said boiler and adapted to be immersed in water therein, said coil having its outlet above the water line of said boiler so that the gas may mix with steam in the steam dome of the boiler, a

steam engine, means for conveying the mixed steam and gas to the cylinders of the steam engine for operating the same, a drive shaft driven by the steam engine, and cam means for driving said gas compressor from said drive shaft, said cam means comprising a fly wheel on the drive shaft having a cam groove therein, a. pitman depending from each piston of the gas compressor and carrying at its lower end a roller projection adapted to be received in and guided by said cam groove to reciprocate the piston.

3'. Apparatus according to claim 1, I in which the means for controlling the gas charge includes in combination, a carbureter having a valve means controlling the quantity and-strength of the gas charge supplied to the gas compressor, a connection from said carbureter to each cylinder of the gas compressor, a lever arm for operating the said valve, a metal bellows operat vely connected with said valve arm so that the valve 1s wide open when the metal bellows is deflated, means for and adapted to be immersed in Water therein,

said coil having its outlet above the water line of said boiler so that the gas may mix with steam in the steam dome of the boiler, a steam engine, means for conveyin g the mixed steam Y and gas to the cylinders of the steam engine for operating the same, a drive shaft driven b the steam en ine means for ClIlVlIl" the y p h gas compressor from the drive shaft comprising a fly wheel on the drive shaft having a groove therein, a pitman depending from each piston'of the gas compressor and having at its lower end a roller projection extending into and guided by said cam groove to operate the piston, and means for controlling the gas charge supply to the gas compressor comprising, in combination, a carbureter having a valve means to control the quantity and strength of the gas charge admitted, a con;

nection from said carburetor to each cylinder of the gas compressor, an arm for operating the valve, a metal bellows, link means operatively connecting said metal bellows with said valve, so that the valve is wide open when the metal bellows is deflated, means for conveying a portion of the steam and gas from the steam dome of the boiler to the metal bellows to operate the same to expand shaft driven by the steam engine,cam means for driving'said gas compressor from said drive shaft, a condenser, means for conveying the exhaust steam and gas from said steam engine cylinder to the condenser, said condenser having an outlet for exhaust gas and an outlet for water, a pump supplied with water from the condenser, means for driving said pump from said drive shaft, the steam and gas cylinders having water jackets, means for conveying the water by force of the pump from the pump to the water jackets, and means for admitting the water preheated in said water jackets into the boiler.

6. Apparatus according to claim 5 in which the means for supplying the boilerwith water from said water jackets comprises a pipe surrounding and enclosing the means for conveying the exploded gas from said gas compressor to said heating coil and providing a water passage therebetween, said water passage being in communication with the interior of said boiler at the point of inlet of the coil to the boiler.

7. Apparatus according to claim 1, in which said cam means for driving the gas compressor from the drive shaft comprises a fly wheel on the drive shaft having a cam groove therein, a pitman depending from each piston of the gas compressor and carrying at its lower end a roller projection adapted to be received in and guided by said cam groove to reciprocate the piston, said cam groove having a low point gradually increasing on a curved line on either side thereof to outer points between which are flattened portions gradually increasing on converging substantially straight lines from said outer points to an OHlZGILIIlOSt apex point, whereby a delayed piston movement is provided in approaching and leaving the end of its firing and compression stroke.

whereof, I affix my signature.

In testimony CHESTER A. SPO'IZ.

it according to the pressure in the-steam dome,

said valve closing as said metal' bellows expands under pressure. I

5. In combination in 'a power engine, a gas compressor, a heating coil, means for discharging the exploded gas immediately upon explosion into the heating coil, a boiler, said heating coil being disposed within said boiler and adapted to be immersed iin water therein, said coil having its outlet above the water line of said boiler, so that the gas may mix with steam in the steam dome of the boiler, a steam engine, means for conveying themixed steam and gas too -he cylinders of steam engine for operating the same, a drive 

